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Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso

Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown

£180.00 £108.00 (SAVE 40%)

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Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso
Merrell Women's Siren 4 Thermo Mid Zip Waterproof - Brown Brown - Tiso

Product Description

These boots are the perfect combination of functionality and comfort for those who need warm, durable footwear for winter activities. Thanks to the 200-gram Primaloft® Gold Eco Series synthetic insulation and Solarcore® Aerogel insole, these boots offer superior warmth while remaining flexible and ultra-thin. The waterproof full-grain leather upper and waterproof membrane keep your feet dry, while the Vibram® Arctic Grip™ All Terrain outsole provides excellent traction and durability, making it ideal for winter hikes. These boots are designed to last all day, even in the harshest of winter conditions.

Product Code: FWWWN2TI0122

Features:
• Heavy-duty, Waterproof, YKK zipper for easy on and off
• Protective and abrasion resistant rubber toe cap
• Cleansport NXT™ treated for natural odor control
• FloatPro™ Foam midsole for lightweight comfort that lasts
Materials:
• Waterproof full grain leather and knit upper
• 100% recycled laces and webbing
• 100% recycled fleece lining
• 100% recycled mesh footbed cover
• 5% recycled PU removable footbed
Specifications:
• Stack Height: 28.5-20.5mm
• Drop: 8mm
• Lug: 5mm
• Half pair weight: 1lbs-3.04oz, 540g

Standard Delivery
FREE
Standard delivery within 5 working days.
FREE Delivery on all orders (for limited time only)
Store Collection
FREE
Click & collect from any eligible store within 7 working days.

Merrell Women's Footwear Size Guide

UK sizeEU sizeUS size
2.5355
335.55.5
3.5366
4376.5
4.537.57
5387.5
5.538.58
6398.5
6.5409
740.59.5
7.54110
84210.5
8.542.511
94311.5

Top Tips

Unsure of your boot or shoe size? …come to Tiso! All of our stores boast qualified footwear specialists who are there to ensure you get the right footwear for your feet. Find out more about our specialist in-store service here.

We realise that not everyone has time to head in-store, if you are ordering online and would like guidance on whether your walking shoes or boots fit, why not check out our "Do My Walking Boots Fit?" video with Tiso equipment expert Aaron.

1 question & 1 answer

Side zip

Why do they have a zip on the side? Are they proper outdoor boots or more a fashion item?

Asked Nicola from Scotland
Hello, Thank you for your question. These boots feature a side zipper, making it easier to put them on and take them off. They offer the perfect combination of functionality and comfort, They are warm and a Vibram sole that provides excellent grip for a variety of winter activities.
Answered by Tiso on 21st Jan, 2025

This item can be returned by post or to your nearest Tiso Group store – for more details see our Returns Policy.

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